This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A216412 #22 Mar 06 2020 00:57:38 %S A216412 1,1,8,8,8,8,8,64,64,64,64,64,64,64,64,216,216,216,216,216,216,216, %T A216412 216,216,216,216,216,216,216,216,216,216,512,216,216,512,512,512,1000, %U A216412 1000,512,512,1000,512,512,512,1728,1728,1000,512,1000,512,1728,1000,1728,1728,1000,1000,1728,1728,1000,1728,1728,1000,1728 %N A216412 The cubes arising in A039771. %H A216412 Amiram Eldar, <a href="/A216412/b216412.txt">Table of n, a(n) for n = 1..10000</a> %F A216412 a(n) = A000010(A039771(n)). - _Amiram Eldar_, Mar 06 2020 %t A216412 Select[EulerPhi @ Range[3000], IntegerQ[Surd[#, 3]] &] (* _Amiram Eldar_, Mar 06 2020 *) %Y A216412 Cf. A000010, A039770, A039771, A039772, A062732, A078164, A166955. %K A216412 nonn %O A216412 1,3 %A A216412 _V. Raman_, Sep 07 2012